. >> he certainly was in tune with modern technology, even joining twitter just a few weeks ago, and he was an environmental pope. he was often dubbed the green pope, and he took climate change seriously and he talked about that. so i think those are positive things. >> but sister maureen fiedler, host of the public radio program "interfaith voices," says benedict's papacy will be largely viewed by how he dealt with the clergy sex abuse crisis. >> i think probably the biggest disappointment with benedict was his inability to adequately handle the sex abuse scandal and to specifically deawitthe prelates, the bishops who covered up those crimes. a lot was done with priests. almost nothing has been done with bishops. and i think that remains a scandal for a lot of catholics. >> other catholics praise his efforts on that front. >> he took that scandal head on and implemented all kinds of new protocols to address that issue once and for all. so i see great hope on that issue going forward. >> speculation about benedict's possible successor continues as people put forward the qualification